Duct systems can be plenum, extended plenum, reducing plenum, or perimeter loop.
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Q2: Adjusting the tension on the belt will
Q3: One reason for using an extended plenum
Q4: Oversized duct systems cost more to fabricate
Q5: The atmosphere exerts a pressure of _
Q6: The forced-air system is different from a
Q8: The main drawback of the extended plenum
Q9: Friction due to air rubbing the walls
Q10: The reason for using a reducing plenum
Q11: The duct pressure equals the velocity pressure
Q12: The _ provides the pressure difference needed
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